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Author Misra, V. ; Selman, C. ; Waite, A. J. ; Bastola, S. ; Mishra, A.
Title Terrestrial and Ocean Climate of the 20th Century Type $loc['typeBook Chapter']
Year 2017 Publication Florida's climate: Changes, variations, & impacts Abbreviated Journal
Volume Issue Pages 485-509
Keywords Seasonal cycle ; Diurnal variations ; Sea breeze ; ENSO ; Tropical cyclones ; Hurricanes ; AWP ; AMO ; PDO ; PIZA
Abstract
Address
Corporate Author Thesis
Publisher Florida Climate Institute
Place of Publication Gainesville, FL
Editor Chassignet, E. P.; Jones, J. W.; Misra, V.; Obeysekera, J.
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 849
Permanent link to this record
Author Moeller, L
Title Low-Frequency Variations of the Sea Breeze in Florida Type $loc['typeManuscript']
Year 2011 Publication Abbreviated Journal
Volume Issue Pages
Keywords Bermuda High ; Atlantic Warm Pool ; Sverdrup Vorticity Balance ; interannual variations
Abstract
Address Department of Earth, Ocean, and Atmospheric Science
Corporate Author Thesis $loc['Master's thesis']
Publisher Florida State University
Place of Publication Tallahassee, FL
Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 334
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Author Yu, P
Title Development of New Techniques for Assimilating Satellite Altimetry Data into Ocean Models Type $loc['typeManuscript']
Year 2006 Publication Abbreviated Journal
Volume Issue Pages
Keywords Data Assimilation, Reduced Space, First Baroclinic Mode, Ocean Models, Vertical Normal Mode Decomposition, Variational
Abstract State of the art fully three-dimensional ocean models are very computationally expensive and their adjoints are even more resource intensive. However, many features of interest are approximated by the first baroclinic mode over much of the ocean, especially in the lower and mid latitude regions. Based on this dynamical feature, a new type of data assimilation scheme to assimilate sea surface height (SSH) data, a reduced-space adjoint technique, is developed and implemented with a three-dimensional model using vertical normal mode decomposition. The technique is tested with the Navy Coastal Ocean Model (NCOM) configured to simulate the Gulf of Mexico. The assimilation procedure works by minimizing the cost function, which generalizes the misfit between the observations and their counterpart model variables. The “forward” model is integrated for the period during which the data are assimilated. Vertical normal mode decomposition retrieves the first baroclinic mode, and the data misfit between the model outputs and observations is calculated. Adjoint equations based on a one-active-layer reduced gravity model, which approximates the first baroclinic mode, are integrated backward in time to get the gradient of the cost function with respect to the control variables (velocity and SSH of the first baroclinic mode). The gradient is input to an optimization algorithm (the limited memory Broyden-Fletcher-Goldfarb-Shanno (BFGS) method is used for the cases presented here) to determine the new first baroclinic mode velocity and SSH fields, which are used to update the forward model variables at the initial time. Two main issues in the area of ocean data assimilation are addressed: 1. How can information provided only at the sea surface be transferred dynamically into deep layers? 2. How can information provided only locally, in limited oceanic regions, be horizontally transferred to ocean areas far away from the data-dense regions, but dynamically connected to it? The first problem is solved by the use of vertical normal mode decomposition, through which the vertical dependence of model variables is obtained. Analyses show that the first baroclinic mode SSH represents the full SSH field very closely in the model test domain, with a correlation of 93% in one of the experiments. One common way to solve the second issue is to lengthen the assimilation window in order to allow the dynamic model to propagate information to the data-sparse regions. However, this dramatically increases the computational cost, since many oceanic features move very slowly. An alternative solution to this is developed using a mapping method based on complex empirical orthogonal functions (EOF), which utilizes data from a much longer period than the assimilation cycle and deals with the information in space and time simultaneously. This method is applied to map satellite altimeter data from the ground track observation locations and times onto a regular spatial and temporal grid. Three different experiments are designed for testing the assimilation technique: two experiments assimilate SSH data produced from a model run to evaluate the method, and in the last experiment the technique is applied to TOPEX/Poseidon and Jason-1 altimeter data. The assimilation procedure converges in all experiments and reduces the error in the model fields. Since the adjoint, or “backward”, model is two-dimensional, the method is much more computationally efficient than if it were to use a fully three-dimensional backward model.
Address Department of Oceanography
Corporate Author Thesis $loc['Ph.D. thesis']
Publisher Florida State University
Place of Publication Tallahassee, FL
Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding NSF, ONR, NASA
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 589
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Author Karmel, T.
Title Using multiple methodologies to explore variation in rainfall events in the southeastern United States Type $loc['typeManuscript']
Year 2016 Publication Abbreviated Journal
Volume Issue Pages
Keywords Climate ; rainfall ; variation ; percentiles ; southeast ; united states ; assessment
Abstract
Address Department of Earth, Ocean, and Atmospheric Sciences
Corporate Author Thesis $loc['Bachelor's thesis']
Publisher Florida State University
Place of Publication Tallahassee, FL
Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 81
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Author Yu, P. ; Morey, S.L. ; O'Brien, J.J.
Title A reduced-dynamics variational approach for the assimilation of altimeter data into eddy-resolving ocean models Type $loc['typeJournal Article']
Year 2009 Publication Ocean Modelling Abbreviated Journal Ocean Modelling
Volume 27
Issue 3-4
Pages 215-229
Keywords Ocean modeling ; Data assimilation ; Variational adjoint methods
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1463-5003
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 400
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Author Kanamitsu, M. ; Yulaeva, E. ; Li, H. ; Hong, S.-Y.
Title Catalina Eddy as revealed by the historical downscaling of reanalysis Type $loc['typeJournal Article']
Year 2013 Publication Asia-Pacific Journal of Atmospheric Sciences Abbreviated Journal Asia-Pacific J Atmos Sci
Volume 49
Issue 4
Pages 467-481
Keywords Catalina Eddy ; vorticity ; diurnal variation ; sea breeze
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1976-7633
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 194
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Author Jia, Y. ; Chassignet, E.P.
Title Seasonal variation of eddy shedding from the Kuroshio intrusion in the Luzon Strait Type $loc['typeJournal Article']
Year 2011 Publication Journal of Oceanography Abbreviated Journal J Oceanogr
Volume 67
Issue 5
Pages 601-611
Keywords Eddy shedding ; Kuroshio intrusion ; Luzon Strait ; Seasonal variation
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0916-8370
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 289
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Author Hu, Z.-Z. ; Huang, B. ; Kinter, J.L. ; Wu, Z. ; Kumar, A.
Title Connection of the stratospheric QBO with global atmospheric general circulation and tropical SST. Part II: interdecadal variations Type $loc['typeJournal Article']
Year 2012 Publication Climate Dynamics Abbreviated Journal Clim Dyn
Volume 38
Issue 1-2
Pages 25-43
Keywords Stratospheric QBO ; Tropical Pacific SST ; Interdecadal variation ; Walker circulation ; Tropical deep convection ; ERA40 and NCEP/NCAR reanalyses ; ENSO
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Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0930-7575
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 260
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Author Hilburn, K.A.
Title Development of scatterometer-derived surface pressures for the Southern Ocean Type $loc['typeJournal Article']
Year 2003 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.
Volume 108
Issue C7
Pages
Keywords scatterometer ; surface pressure ; variational techniques ; Southern Ocean ; SeaWinds ; QuikSCAT
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0148-0227
ISBN Medium
Area Expedition Conference
Funding NASA, NOAA, ONR
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 477
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Author Misra, V. ; DiNapoli, S.
Title The variability of the Southeast Asian summer monsoon Type $loc['typeJournal Article']
Year 2014 Publication International Journal of Climatology Abbreviated Journal Int. J. Climatol.
Volume 34
Issue 3
Pages 893-901
Keywords Monsoon onset ; Monsoon demise ; length of wet season ; interannual variation
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0899-8418
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 139
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